CA1195768A - Digital television receiver automatic chroma control system - Google Patents
Digital television receiver automatic chroma control systemInfo
- Publication number
- CA1195768A CA1195768A CA000422141A CA422141A CA1195768A CA 1195768 A CA1195768 A CA 1195768A CA 000422141 A CA000422141 A CA 000422141A CA 422141 A CA422141 A CA 422141A CA 1195768 A CA1195768 A CA 1195768A
- Authority
- CA
- Canada
- Prior art keywords
- gain
- signal
- color information
- chroma
- information signals
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 claims description 6
- 230000000295 complement effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 230000002238 attenuated effect Effects 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 description 12
- 230000004044 response Effects 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 3
- 241001576000 Ero Species 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000725101 Clea Species 0.000 description 1
- 101000860173 Myxococcus xanthus C-factor Proteins 0.000 description 1
- WCZWUYYJZVBKDZ-FGSXEWAUSA-N Vertine Natural products O([C@@H]1C[C@H](N2CCCC[C@@H]2C1)C=1C=C(C(=CC=11)OC)OC)C(=O)C=CC2=CC=C(O)C1=C2 WCZWUYYJZVBKDZ-FGSXEWAUSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019988 mead Nutrition 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/68—Circuits for processing colour signals for controlling the amplitude of colour signals, e.g. automatic chroma control circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/70—Circuits for processing colour signals for colour killing
- H04N9/71—Circuits for processing colour signals for colour killing combined with colour gain control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/359,433 US4447826A (en) | 1982-03-18 | 1982-03-18 | Digital television receiver automatic chroma control system |
| US359,433 | 1982-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1195768A true CA1195768A (en) | 1985-10-22 |
Family
ID=23413773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000422141A Expired CA1195768A (en) | 1982-03-18 | 1983-02-22 | Digital television receiver automatic chroma control system |
Country Status (11)
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4485396A (en) * | 1982-09-16 | 1984-11-27 | Ampex Corporation | Automatic chroma filter |
| US4604645A (en) * | 1983-09-30 | 1986-08-05 | Rca Corporation | Coarse/fine automatic chrominance gain control using a gain adjustable IF amplifier in a digital television receiver |
| US4573069A (en) * | 1984-03-29 | 1986-02-25 | Rca Corporation | Chrominance fine gain control in a digital television receiver |
| US4602276A (en) * | 1984-04-12 | 1986-07-22 | Rca Corporation | Digital signal level overload system |
| US4630102A (en) * | 1984-10-10 | 1986-12-16 | Rca Corporation | Digital chroma overload system |
| US4635102A (en) * | 1984-10-24 | 1987-01-06 | Rca Corporation | Chroma signal amplitude control apparatus |
| US4686560A (en) * | 1986-05-30 | 1987-08-11 | Rca Corporation | Phase locked loop system including analog and digital components |
| US4731851A (en) * | 1986-09-24 | 1988-03-15 | Rca Corporation | Digital signal gain control circuitry for varying digital signals in substantially equal db steps |
| FR2669170A1 (fr) * | 1990-11-09 | 1992-05-15 | Philips Electronics Nv | Procede et dispositif pour le reglage de niveau de signaux video dans un appareil de reception de television. |
| JPH06243580A (ja) * | 1993-02-15 | 1994-09-02 | Hitachi Ltd | Ａｇｃ回路 |
| US6177962B1 (en) * | 1999-06-30 | 2001-01-23 | Thomson Licensing S.A. | Apparatus and method for preventing oversaturation of chrominance signals |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3740462A (en) * | 1972-04-10 | 1973-06-19 | Rca Corp | Automatic chroma gain control system |
| JPS5534613B2 (enrdf_load_stackoverflow) * | 1973-10-08 | 1980-09-08 | ||
| US3943560A (en) * | 1974-05-10 | 1976-03-09 | General Electric Company | Picture level control with compatible automatic chroma control |
| US3983381A (en) * | 1974-12-18 | 1976-09-28 | International Business Machines Corporation | Digital automatic gain control circuit |
| IT1050574B (it) * | 1975-07-01 | 1981-03-20 | Indesit | Perfezionamenti di sistemi di televisione a colori |
| JPS587117B2 (ja) * | 1975-10-01 | 1983-02-08 | ソニー株式会社 | イロシンゴウシヨリカイロ |
| IT1055629B (it) * | 1975-10-09 | 1982-01-11 | Indesit | Controllo automatico della saturazione in un ricevitore di televisione a colori |
| CA1021879A (en) * | 1975-12-11 | 1977-11-29 | Ernst A. Munter | Incrementally adjustable digital attenuator/amplifier |
| US4240113A (en) * | 1976-10-14 | 1980-12-16 | Micro Consultants, Limited | Picture manipulation in video systems |
| US4240106A (en) * | 1976-10-14 | 1980-12-16 | Micro Consultants, Limited | Video noise reduction |
| JPS5418102U (enrdf_load_stackoverflow) * | 1977-07-08 | 1979-02-06 | ||
| US4213097A (en) * | 1978-10-19 | 1980-07-15 | Racal-Milgo, Inc. | Hybrid automatic gain control circuit |
| DE2854236C2 (de) * | 1978-12-15 | 1982-06-09 | Deutsche Itt Industries Gmbh, 7800 Freiburg | Farbfernsehempfänger mit mindestens teilweise digitaler Signalverarbeitung und mit mindestens einer integrierten Schaltung für das Luminanzsignal und die Chrominanzsignale |
| US4191995A (en) * | 1979-01-02 | 1980-03-04 | Bell Telephone Laboratories, Incorporated | Digital automatic gain control circuit |
| GB2042294B (en) * | 1979-02-06 | 1983-08-17 | Emi Ltd | Automatic gain control |
| GB2052898B (en) * | 1979-06-25 | 1983-09-28 | Tokyo Shibaura Electric Co | Digitally controlled signal level adjusting apparatus |
| US4272648A (en) * | 1979-11-28 | 1981-06-09 | International Telephone And Telegraph Corporation | Gain control apparatus for digital telephone line circuits |
| DE3069073D1 (en) * | 1980-10-30 | 1984-10-04 | Itt Ind Gmbh Deutsche | Colour television receiver comprising at least an integrated digital circuit for processing the composite colour signal |
| US4396938A (en) * | 1981-07-23 | 1983-08-02 | Rca Corporation | Controlled ram signal processor |
| US4415918A (en) * | 1981-08-31 | 1983-11-15 | Rca Corporation | Digital color television signal demodulator |
| DE3136216A1 (de) * | 1981-09-12 | 1983-03-31 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum regeln der amplitude des farbsignals |
-
1982
- 1982-03-18 US US06/359,433 patent/US4447826A/en not_active Expired - Lifetime
-
1983
- 1983-02-22 CA CA000422141A patent/CA1195768A/en not_active Expired
- 1983-03-10 IT IT20004/83A patent/IT1167556B/it active
- 1983-03-11 ES ES520501A patent/ES8403684A1/es not_active Expired
- 1983-03-11 AU AU12390/83A patent/AU563598B2/en not_active Ceased
- 1983-03-17 JP JP58045825A patent/JPH0669223B2/ja not_active Expired - Lifetime
- 1983-03-17 DE DE3309680A patent/DE3309680C3/de not_active Expired - Fee Related
- 1983-03-17 FR FR8304395A patent/FR2523793B1/fr not_active Expired
- 1983-03-17 GB GB08307377A patent/GB2118800B/en not_active Expired
- 1983-03-18 KR KR1019830001093A patent/KR910004288B1/ko not_active Expired
- 1983-03-18 AT AT0096683A patent/AT384705B/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ES520501A0 (es) | 1984-03-16 |
| FR2523793B1 (fr) | 1989-08-18 |
| DE3309680C2 (enrdf_load_stackoverflow) | 1992-05-14 |
| IT1167556B (it) | 1987-05-13 |
| AU1239083A (en) | 1983-09-22 |
| KR840004651A (ko) | 1984-10-22 |
| ATA96683A (de) | 1987-05-15 |
| KR910004288B1 (ko) | 1991-06-25 |
| GB2118800A (en) | 1983-11-02 |
| FR2523793A1 (fr) | 1983-09-23 |
| ES8403684A1 (es) | 1984-03-16 |
| JPH0669223B2 (ja) | 1994-08-31 |
| DE3309680C3 (de) | 1996-06-20 |
| AT384705B (de) | 1987-12-28 |
| JPS58170291A (ja) | 1983-10-06 |
| IT8320004A0 (it) | 1983-03-10 |
| GB2118800B (en) | 1986-04-03 |
| IT8320004A1 (it) | 1984-09-10 |
| US4447826A (en) | 1984-05-08 |
| AU563598B2 (en) | 1987-07-16 |
| GB8307377D0 (en) | 1983-04-27 |
| DE3309680A1 (de) | 1983-10-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |